//@version=6
indicator("Golden Window Reversal", overlay = true)

// ============================================================================
// GOLDEN WINDOW REVERSAL
// Based on Humbled Trader — "Price Action Trading Strategy Extended Crash Course"
// Her rules implemented here:
//  • Zoom out first: the DAILY trend is your best friend. Above the daily
//    200 SMA = bullish big picture; below = bearish.
//  • Her "golden reversal time frame": 10:30–11:00 AM ET is when morning
//    sell-offs on strong stocks tend to reverse (v-shape recovery).
//  • Entry: first red day / morning sell-off on an uptrending large cap with
//    no bearish news → wait for the 5-min downtrend to break with a higher
//    low inside the golden window, then trade the reversal long.
//  • Long wicks at highs = sellers stepping in (resistance); long wicks at
//    lows = dip buyers (support).
//  • Front side vs back side: above the daily key level + VWAP = front side
//    (don't short); below both = back side (don't buy breakouts).
// ============================================================================

tzNY     = "America/New_York"
wickMult = input.float(2.0, "Wick vs body multiple for wick signals", step = 0.25)
useTrend = input.bool(true, "Require daily 200 SMA uptrend for longs")

daily200 = request.security(syminfo.tickerid, "D", ta.sma(close, 200))
vwapLine = ta.vwap(hlc3)

inGolden  = not na(time(timeframe.period, "1030-1100", tzNY))
inSession = not na(time(timeframe.period, "0930-1600", tzNY))

dailyBull = close > daily200

// --- Morning downtrend into the window: lower lows since the open
var float openPx   = na
var bool  soldOff  = false
newDay = ta.change(time("D")) != 0
if newDay
    openPx  := open
    soldOff := false
if inSession and close < openPx * 0.995
    soldOff := true

// --- Golden-window reversal: higher low + close over prior bar high inside window
higherLow   = low > low[1] and low[1] <= low[2]
reversalSig = inGolden and soldOff and higherLow and close > high[1] and close > vwapLine and (not useTrend or dailyBull)

// --- Wick reads
body      = math.abs(close - open)
upWick    = high - math.max(close, open)
dnWick    = math.min(close, open) - low
sellWick  = inSession and upWick > body * wickMult and volume > ta.sma(volume, 13)
buyWick   = inSession and dnWick > body * wickMult and volume > ta.sma(volume, 13)

// --- Front side / back side vs VWAP
frontSide = close > vwapLine and dailyBull
backSide  = close < vwapLine and not dailyBull

plot(vwapLine, "VWAP", color.new(color.blue, 0), 2)
plot(daily200, "Daily 200 SMA", color.new(color.orange, 0), 2)

plotshape(reversalSig, "Golden Window Reversal", shape.labelup, location.belowbar, color.new(color.green, 0), text = "GOLDEN\nREV", textcolor = color.white, size = size.small)
plotshape(sellWick, "Seller Wick", shape.triangledown, location.abovebar, color.new(color.red,   40), size = size.tiny)
plotshape(buyWick,  "Buyer Wick",  shape.triangleup,   location.belowbar, color.new(color.green, 40), size = size.tiny)

bgcolor(inGolden ? color.new(color.yellow, 88) : na, title = "Golden reversal window")
bgcolor(backSide ? color.new(color.red, 95) : frontSide ? color.new(color.green, 97) : na)

alertcondition(reversalSig, "Golden Window Reversal", "Golden Window Reversal: 10:30–11:00 higher-low reversal over VWAP on a daily-uptrend stock")
alertcondition(sellWick, "Seller Wick at Highs", "Golden Window Reversal: heavy upper wick — sellers stepping in")